Car-wheel



(No Model.)

W.R. JENKINS, Jr.

Patented Apr. 17,1883.

GAR WHEEL.

UNITED STATES 'ATE'NT OFFICE.

\VILLIAM It. JENKINS, Jlt, OF BELLEFONTE, PENNSYLVANIA.

CAR-WHEEL.

SPECIFICATION forming part of Letters Patent No. 276,047, dated April 17, 1883.

Application filed November 27, 1882.

To all whom it may concern Be it known that I,WILLIAM It. JENKINS, Jr., of Bellefonte, in the county ot'Oentre and State of Pennsylvania, have invented a new and useful Improvement in Oar-Wheels; and I do hereby declare that the followingis a full and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates to self-oilin g car-wheels, and its object is to construct a wheel in such a manner that it will at all times prove cheap, durable, andeffective.

The invention consists more particularly in the construction of the hubs of such wheels, as will be fully hereinafter described.

For the better understanding of the invention, frequent reference will be made to the accompanying drawings, which form partof this specification, and in which- Figure l is a central vertical section of a wheel constructed in accordance with my invention, and Fig. 2 a cross-section on the line 00 y, Fig. 1.

Like letters refer to corresponding both views.

The wheel A and the hub B are cast in one piece, said hub extending out a short distance beyond said wheel. Through the center of the hub B an opening, a, is formed to allow of the passage therethrough of the axle 0, said axle being of ordinary construction and being held in position in the hub by a linchpin, I), which is similar to those in common use. The construction adapted to allow of the insertion and withdrawal of this pin 11 will be hereinafter fully described. This hub B is also provided with an annular opening or chamber, D, which extends from the outer end of said hub back to a point near the inner edge of the same. This chamber, which serves as a receptacle for thelubricating-oil, is closed by means of a plug, E, which is provided on its edges with a suitable screw-thread, and which is screwed into the end of the hub B, as shown in Fig. 1. This plug is provided at its center with an opening, 0, through which oil is passed to the annular chamber D. Through the wall which separates the chamber D from the opening aholes d are bored, any requirednuinber being used. Through these holes (I the oil in chamber D passes to the axle O:

parts in (No model.)

To the interior of the hub B, and in chamber D, are cast cone shaped projections e c, the number of which is determined by the number of holes (I through which oil passes to the axle. These projections e e, as above stated, are cast to the interior of the hub, and occupy a position directly opposite the holes d d, said projections being of such a size that their lower ends will be brought into close proximity to said holes. The object of this construction and the use of these projections is to secure means whereby the entrance of the oil into the holes (I is rendered more certain. In the revolution of the wheel, and when the oil in the chamber D is nearly all consumed, the lubrication of the axle is not so certain unless a construction similar to these cone-shaped projections 6 c is employed. By their employment, however, such lubrication becomes certain and continuous until the entire quantity of oil is consumed, because of the-fact that as these projections in their revolution with the wheel pass through the oil a portion thereof adheres to them, and whenever one of said projections is brought to the top of the hub, or to a position where it will point downward, the oil adhering thereto drops in small quantities into the holes (I d.

In the hub B, and at the point shown in Fig. 1, or at any other suitable point, I form a cupshaped recess, F, which opens into the chamber D. This recess is ofsnfiicient depth to allow of the insertion therein of the upper end of the liuchpin b when it is desired to fasten the wheel and axle together. In Fig. 1 I have shown in dotted lines the position taken by the linchpin before being dropped into its proper place.

In order that all may be benefitted by my invention, I will now describe the manner in which it is to be used, a detail description of its several parts having been given.

The parts having been constructed as de- ICO .through the opening left in the end of the hub, v

and its upper end caused to enter the cupshaped recess until said pin is enabled to assume a vertical position, after which it is dropped into the holein the axle, and said axle 5 is thus securely fastened to the wheel. After this has been accomplished the plug E is screwed into the end of the hub B and the lubricating-oil poured through the-opening 0 left in the center of said plug. After the an- 10 nular chamber D has been supplied with sufficient oil this opening may be closed in any suitable manner to prevent'the entrance of dust or dirt into the chamber D. This chamber having been filled with oil, the wheel is 15 caused to revolve and the axle is properly lubricated by the passage of the oil from chamber D through holes (I d to said axle. When the supply of oil in this chamber becomes nearly exhausted, lubrication is rendered cer- 2o tain and continuous by the cone-shaped projections e e, as before described.

Having thus described myinvention, what I claim as new therein, and that for which I desire to secure Letters Patent, is-

1. In aself-oiling car-wheel, a hub provided 25 with an unobstructed annular chamber, in combination with a screw-threaded plug provided with an opening in its center, substantially as described and shown.

2. In a self-oiling car-wheel, a hub provided 0 with an unobstructed annular chamber and with a cup-shaped recess, in combination with the axle and linchpin, substantially as described and shown.

In testimony whereof I affix my signature in 3 presence of two witnesses. 7

WILLIAM It. JENKINS, JR.

\Vitnesses:

I. L. MONTGOMERY, J. H. LINGLE. 

